Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 17-11-2020 and time 18:29:52 (Italy) in region 3 km SE San Giovanni Rotondo (FG)

A magnitude ML 1.7 earthquake occured in region: 3 km SE San Giovanni Rotondo (FG), on

  • 17-11-2020 17:29:52 (UTC)
  • 17-11-2020 18:29:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.6930, 15.7600 at 19 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
San Giovanni Rotondo FG 3 27184 27184
San Marco in Lamis FG 10 13831 41015
Rignano Garganico FG 14 2117 43132
Manfredonia FG 15 57279 100411
Cagnano Varano FG 15 7330 107741
Monte Sant'Angelo FG 17 12657 120398
Carpino FG 19 4182 124580

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km W of Manfredonia (57279 inhabitants)
31 Km NE of Foggia (151991 inhabitants)
31 Km E of San Severo (53905 inhabitants)
49 Km N of Cerignola (58396 inhabitants)
60 Km NW of Barletta (94814 inhabitants)
68 Km NW of Andria (100440 inhabitants)
72 Km NW of Trani (56217 inhabitants)
80 Km NW of Bisceglie (55422 inhabitants)
89 Km NW of Molfetta (59874 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.7 2020-11-17
17:29:52		 41.6933 15.7598 19 2021-02-26
14:56:16		 Bollettino Sismico Italiano INGV 86471101
Reviewed
Rev100 		ML 1.8 2020-11-17
17:29:51		 41.6953 15.7665 19 2020-11-17
22:17:50		 Sala Sismica INGV-Roma 84807501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-17 17:29:52 ± 0.04
Latitude 41.6933 ± 0.0027
Longitude 15.7598 ± 0.0024
Depth (km) 19 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86471101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 216
Semi-minor axis of confidence ellipse (meter) 210
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 339
Circular confidence region, given by single value of horizontal uncertainty (meter) 220.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 164
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.05
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.71136
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 5
Type of magnitude ML
Reference to an origin 84807501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-17 22:17:50

ML:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations 5
Type of magnitude ML
Reference to an origin 86471101
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-22 21:13:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SENA.HHZ. 2020-11-17T17:31:23.31 3.0 undecidable manual Sn 0.86 0
IV.IMOL.HNZ. 2020-11-17T17:31:20.20 3.0 undecidable manual Sn -1.14 0
IV.EUCT.HNZ. 2020-11-17T17:31:08.01 3.0 undecidable manual Pn 7.6 0
IV.ARCI.HHZ. 2020-11-17T17:31:05.28 3.0 undecidable manual Sg 8.04 0
IV.CAVE.HHZ. 2020-11-17T17:30:55.75 3.0 negative manual Pg 10.73 0
IV.ATFO.HHZ. 2020-11-17T17:30:21.59 3.0 positive manual Pn 2.31 0
IV.MRVN.HHE. 2020-11-17T17:30:05.77 0.3 undecidable manual P 153 78.9654 97 -0.01 66
IV.APRC.HHZ. 2020-11-17T17:30:00.47 0.3 undecidable manual S 292 19.2696 127 -0.07 73
OT.OT06.EHZ. 2020-11-17T17:29:59.52 0.3 undecidable manual S 266 13.7751 138 0.08 74
OT.OT05.EHZ. 2020-11-17T17:29:59.34 0.3 undecidable manual S 254 13.5753 139 -0.07 74
OT.OT04.EHN. 2020-11-17T17:29:59.72 0.3 undecidable manual S 281 15.0738 135 0.03 74
IV.SGRT.HHN. 2020-11-17T17:29:58.42 0.3 undecidable manual S 349 6.8931 157 -0.03 75
OT.OT05.EHZ. 2020-11-17T17:29:56.31 0.1 undecidable manual P 254 13.5753 139 -0.02 100
OT.OT04.EHN. 2020-11-17T17:29:56.51 0.1 undecidable manual P 281 15.0738 135 0.02 99
IV.APRC.HHZ. 2020-11-17T17:29:56.95 0.1 negative manual P 292 19.2696 127 -0.03 99
OT.OT06.EHZ. 2020-11-17T17:29:56.37 0.1 undecidable manual P 266 13.7751 138 0.03 100
IV.SGRT.HHN. 2020-11-17T17:29:55.84 0.1 positive manual P 349 6.8931 157 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OT.OT05.EHE. ML:1.7 0.00034399999999999996 1.08 AML other m 2020-11-17T17:29:59.66
OT.OT05.EHN. ML:1.6 0.00027649999999999994 0.18 AML other m 2020-11-17T17:29:59.80
IV.APRC.HNE. ML:1.7 0.00032339969999999995 0.1664 AML other m 2020-11-17T17:30:00.70
IV.APRC.HHE. ML:1.8 0.00033600000000000004 0.18 AML other m 2020-11-17T17:30:00.71
IV.APRC.HHN. ML:1.9 0.00049 0.12 AML other m 2020-11-17T17:30:00.75
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download